CN108691547A - The disassembling method of shield machine anterior shield - Google Patents
The disassembling method of shield machine anterior shield Download PDFInfo
- Publication number
- CN108691547A CN108691547A CN201810379484.3A CN201810379484A CN108691547A CN 108691547 A CN108691547 A CN 108691547A CN 201810379484 A CN201810379484 A CN 201810379484A CN 108691547 A CN108691547 A CN 108691547A
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- China
- Prior art keywords
- shield
- cut
- anterior
- anterior shield
- shield machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Abstract
The present invention relates to a kind of disassembling methods of shield machine anterior shield, include the following steps:After the completion of shield machine tunneling construction, the anterior shield of shield machine is unloaded;In two cut-off rules are arranged on the anterior shield, two cut-off rules are set to the both sides of the center ring of the anterior shield;And along anterior shield described in two segmentation wire cuttings so that the anterior shield is cut into three parts, to complete the disintegration of shield machine anterior shield.Anterior shield is cut into three parts by the present invention, is protected the structural integrity of center ring, and avoid shield body turn operation without removing base bearing, is enabled to anterior shield disintegration operation more convenient.Later stage restoration costs can be greatly reduced, and can achieve the purpose that safety and steady shield machine disintegrates is transported back out of tunnel.
Description
Technical field
The present invention relates to Shield Construction Technique fields, refer in particular to a kind of disassembling method of shield machine anterior shield.
Background technology
Shield machine is after the completion of section is tunneled, and into received well, need to hang out shield machine from received well.Due to receiving
Well is not adjusted and is lifted, if existing way is to tear shield machine open machine in received well to be divided into stem portion, then passes through fortune
Various pieces are transported back along the tunnel that driving is completed to starting well and are hung out by defeated trolley.
In the prior art, to there are two types of the disassembling methods of anterior shield, one is central symmetry partitioning schemes, as shown in Figure 1,
One cutting line 21 by the center of circle is set on the end face of anterior shield 10, cutting line 21 is arranged through center ring 101 and shield shell 102,
To which the cutting of anterior shield 10 is formed two parts.Another kind is non-centrosymmetry partitioning scheme, is arranged on the end face of front end 10 non-
Symmetrical two cutting lines 22, cutting line 22 connect center ring 101 and shield shell 102, to which the cutting of anterior shield 10 is formed two parts.
Two kinds of above-mentioned disassembling methods are required to destroy the center ring of anterior shield, need to remove the base bearing on anterior shield, are removing main shaft
Shield body is needed to turn over when holding multiple, it is cumbersome.Above-mentioned disassembling method destroys center ring, the bolt hole on center ring, after
Phase restores costly.
Invention content
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of disassembling method of shield machine anterior shield is provided, is solved
The center ring of anterior shield is destroyed in existing anterior shield disassembling method, need to remove base bearing and the multiple behaviour for turning over and bringing of shield body
The problem of making cumbersome and later stage restoration costs height etc..
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of disassembling methods of shield machine anterior shield, include the following steps:
After the completion of shield machine tunneling construction, the anterior shield of shield machine is unloaded;
In two cut-off rules are arranged on the anterior shield, two cut-off rules are set to the both sides of the center ring of the anterior shield;With
And
Along anterior shield described in two segmentation wire cuttings so that the anterior shield is cut into three parts, to complete shield
The disintegration of structure machine anterior shield.
Anterior shield is cut into three parts by the present invention, protects the structural integrity of center ring, and avoid without removing base bearing
Shield body turns over operation, enables to anterior shield operation of disintegrating more convenient.Later stage restoration costs can be greatly reduced, Ke Yida
To transport shield machine disintegration out of tunnel back the purpose of safety and steady.
The disassembling method of shield machine anterior shield of the present invention further improvement lies in that, the periphery of the center ring of the anterior shield and shield
It is connected with soil cabin panel between shell, opening is equipped at the top and bottom of the soil cabin panel;
When cut-off rule is arranged, the cut-off rule is set to the both sides of the soil cabin panel.
The disassembling method of shield machine anterior shield of the present invention further improvement lies in that, be arranged cut-off rule when, avoid the soil cabin
The ball valve and mounting hole being arranged on panel.
The disassembling method of shield machine anterior shield of the present invention further improvement lies in that, the periphery of the center ring of the anterior shield and shield
Support is connected with multiple main gussets between shell, is supported by main ribs plate and connects the center ring and the shield shell;
Before anterior shield described in two segmentation wire cuttings, divide in the outside of the center ring and described two
The stiffener plate of one annular of setting, the stiffener plate is fixedly connected with multiple main gussets between line.
The disassembling method of shield machine anterior shield of the present invention further improvement lies in that, be arranged cut-off rule when, by the cut-off rule
The part of the upper correspondence center ring is arranged to arc shape lines, the radian of the radian and the center ring of the arc shape lines
It is adapted.
The disassembling method of shield machine anterior shield of the present invention further improvement lies in that, by the arc shape lines be set to it is described plus
The edge of strengthening tendons plate.
The disassembling method of shield machine anterior shield of the present invention further improvement lies in that, will be described point when the cut-off rule is set
The part that shield shell is corresponded on secant is arranged perpendicular to the shield shell.
The disassembling method of shield machine anterior shield of the present invention further improvement lies in that, along described two segmentation wire cuttings institutes
Further include before stating anterior shield:
In the both sides for corresponding to the cut-off rule on the outer surface of shield shell, positioning device is set.
The disassembling method of shield machine anterior shield of the present invention further improvement lies in that, described two cut-off rules are in the center
The both sides of flange are arranged in inverted image.
The disassembling method of shield machine anterior shield of the present invention further improvement lies in that, cut in the three parts of formation with described
The width of the part of center ring is less than the diameter that shield machine tunnels the tunnel to be formed.
Description of the drawings
Fig. 1 is a kind of cutting line distribution schematic diagram of anterior shield decomposition method in the prior art.
Fig. 2 is the cutting line distribution schematic diagram of another anterior shield decomposition method in the prior art
Fig. 3 shows for the structure in the disassembling method of shield machine anterior shield of the present invention after two cut-off rules are arranged on anterior shield end face
It is intended to.
Fig. 4 is the segmentation tripartite structural schematic diagram of wire cutting in edge in the disassembling method of shield machine anterior shield of the present invention.
Fig. 5 be shield machine anterior shield of the present invention disassembling method in positioning device structural schematic diagram.
Fig. 6 be shield machine anterior shield of the present invention disassembling method in positioning device side view.
Fig. 7 is the structural schematic diagram for transporting the cutterhead part after decomposing using transport vehicle in tunnel.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.
Refering to Fig. 3, the present invention provides a kind of disassembling method of shield machine anterior shield, for solve it is existing by anterior shield half-and-half or
It is asymmetrical to hemisect be divided into destruction center's ring existing for two parts, remove base bearing make shield body turn over often, operation
The cumbersome and high problem of later stage restoration costs.Anterior shield cutting is divided into left, center, right three parts, left and right two by the disassembling method of the present invention
Side near symmetrical, middle section completely remain the opening on center ring and soil cabin panel, avoid the destruction to center ring,
It without base bearing is removed, avoids shield body and turns over operation, enable to anterior shield to disintegrate more convenient, and reduce later stage recovery
Expense.The disassembling method of shield machine anterior shield of the present invention is illustrated below in conjunction with the accompanying drawings.
Refering to Fig. 3, it is shown that in two cut-off rules of setting on anterior shield end face in the disassembling method of shield machine anterior shield of the present invention
Structural schematic diagram afterwards.With reference to Fig. 3, the disassembling method of shield machine anterior shield of the present invention is illustrated.
As shown in figure 3, the disassembling method of the shield machine anterior shield of the present invention, includes the following steps:
After the completion of shield machine tunneling construction, the anterior shield 10 of shield machine is unloaded;
In two cut-off rules 31 are arranged on anterior shield 10, two cut-off rules 31 are set to the both sides of the center ring 101 of anterior shield 10;
And
In conjunction with shown in Fig. 4, two cut-off rules 31 on edge cutting anterior shield 10 so that anterior shield 10 is cut into three parts, to
Complete the disintegration of shield machine anterior shield.
Anterior shield is cut into three parts by the disassembling method of the present invention, completely remains the structure of center ring so that main shaft
It holds without removing, avoids shield body in demolishing process and turn over operation.The present invention can also effective protection by above-mentioned disassembling method
Other in good on precursor bolt hole, center ring bolt hole, screw machine insertion set, soil pressure case mounting hole and soil cabin panel are pre-
It boxes out, and follow-up restoration costs are low.
As shown in figure 3, anterior shield 10 includes centrally located center ring 101, which connects with positioned at base bearing 105
It connects, the periphery of base bearing 105 is provided with connection bolt, and corresponding connecting hole is offered on center ring 101, passes through the connecting hole
Base bearing 105 is mounted on center ring 101 by the cooperation with connection bolt.The periphery of anterior shield 10 is shield shell 102, in center ring
Soil cabin panel 103 is connected between 101 and shield shell 102, soil cabin panel 103 is annular slab, the end face for closing anterior shield 10.For
Compacted soil on-deck plate 103, is evenly equipped with main gusset 104 between center ring 101 and shield shell 102, main gusset 104 also with soil cabin face
Plate 103 is fixedly connected.Opening 1031 is offered in the top and bottom of soil cabin panel 103, the opening 1031 at top is people storehouse
The opening 1031 of entrance, bottom is screw conveyor interface.
As the better embodiment of the present invention, which is set to cut-off rule 31 when cut-off rule 31 is arranged
The both sides of soil cabin panel 103 avoid the opening 1031 of the top and bottom setting of native storehouse surface plate 103, protect opening 1031
It is intact.
Further, it is arranged when on the both sides of soil cabin panel 103 by cut-off rule 31, should avoids on soil cabin panel 103
The ball valve and mounting hole of setting, protect the structural member being arranged on soil cabin panel 103 to greatest extent.
As another better embodiment of the present invention, as shown in Figure 3 and Figure 4, before being cut along two cut-off rules 31
Before shield 10, the stiffener plate 32 of an annular is set between the outside of center ring 101 and two cut-off rules 31, by the reinforcing rib
Plate 32 is fixedly connected with multiple main gussets 104, to play the role of reinforcing center ring 101, prevents the center ring in cutting process
It is deformed.
The stiffener plate 32 is fastened on master by the position fluting that main gusset 104 is corresponded in stiffener plate 32 by fluting
On gusset 104, then stiffener plate 32 and main gusset 104 are connected and fixed by welding.Since stiffener plate 32 is arranged two
Between cut-off rule 31 so that cutting operation does not interfere with the integrality of stiffener plate 32, the intact guarantor of the stiffener plate 32
It has stayed on the part after cutting where the center ring that is formed.
As the another better embodiment of the present invention, as shown in figure 3, on setting cut-off rule 31, it will be on cut-off rule 31
Arc-shaped shape lines are arranged in the part of corresponding center ring 101, and the radian of the arc shape lines is mutually fitted with the radian of center ring 101
Match.
Preferably, being arranged arc shape lines in the edge of stiffener plate 32.So that from the stiffener plate 32 when cutting
Edge cut through, remain the intact of stiffener plate 32, and it is also possible that the width of the part with center ring is full after cutting
The requirement of sufficient tunnel transport.
Further, when cut-off rule 31 is arranged, the part of shield shell 102 will be corresponded on cut-off rule 31 perpendicular to shield shell 102
Setting.
The part that cut-off rule 31 is located on soil cabin panel 103 is obliquely arranged, the skewed lines and arc shape line
Item connects.
As another better embodiment of the present invention, two cut-off rules 31 are arranged in the both sides of center ring 101 in inverted image.
As the better embodiment another again of the present invention, as shown in figure 4, carrying center ring in the three parts that cutting is formed
The width of 101 part is less than the diameter that shield machine tunnels the tunnel to be formed.Formd after cutting left half, middle section and
The width of right half, wherein middle section is most wide, enables the width of the middle section be less than the diameter in tunnel, after disclosure satisfy that segmentation
Transport requirement.Preferably, the length and width of left half is 5999.4mm, 1685.2mm, the length and width of middle section be 6390.0mm,
The length and width of 4130.9mm, right half are 5981.5mm, 1685.2mm.In conjunction with shown in Fig. 7, the internal diameter of 11 section of jurisdiction of tunnel is
5500.0mm.Left half, middle section and the right half after segmentation are transported to using the transport vehicle 12 in tunnel 11 and originated
Well, and then hang out.
The present invention decomposition method further include:After anterior shield is disassembled from shield machine, premise is turned over and padded, cleaning
Dregs near soil cabin panel and shell cut-off rule.
Before being cut, as shown in Figures 3 to 5, positioning device 41 is set on the shield shell 102 of front end, by positioning device
41 are fixed at segmentaion position, and the both sides that cut-off rule 31 is corresponded on the outer surface of shield shell are arranged in positioning device 41, utilize positioning
The setting of device 41 can accurately and quickly position the various pieces of anterior shield when restoring anterior shield.
As shown in Figure 5 and Figure 6, positioning device 41 includes the first positioning bolt 411 and the second positioning bolt 412, in conjunction with Fig. 3
Shown, on the shield shell 102 for the both sides that the first positioning bolt 411 and the second positioning bolt 412 are fixed on cut-off rule, and first is fixed
The end of position bolt 411 and the second positioning bolt 412 can be affixed the interconnection of merga pass connector.It is cut along cut-off rule
It cuts after forming three parts, shield shell of each section at docking is positioned equipped with fixed first positioning bolt 411 or second
Bolt 412.Subsequently when restoring cutterhead, positioned by the first positioning bolt 411 and second being arranged in cutterhead various pieces
Bolt 412 can facilitate the docking between cutterhead various pieces, by the first positioning bolt 411 and the second positioning bolt 412 in succession
It after connecing, is just aligned between the various pieces of cutterhead, then welds the recovery for just completing cutterhead comprehensively again.
Preferably, the end of the first positioning bolt 411 offers multiple connecting holes of rounded array, spiral shell is positioned second
The end of bolt 412 also offers corresponding connecting hole, and the first positioning bolt 411 includes upper clamp plate and lower clamp plate, upper clamp plate and
There is certain spacing between lower clamp plate, in the corresponding connecting hole of the end set of upper clamp plate and lower clamp plate.In docking, by second
The end of positioning bolt 412 is inserted between upper clamp plate and lower clamp plate, and is aligned with the connecting hole being arranged on upper clamp plate and lower clamp plate,
And then be connected and fixed by connector, just complete the quick positioning between anterior shield various pieces.
When cut-off rule is arranged, need to consider the space of lower burning torch, avoid space where cut-off rule too small and so that can not make
Industry.When cut-off rule is set on soil cabin panel, ball valve, valve block and support pressure sensor, impacted valve group and pipeline are circumvented
Need premature removal protection keeping.It slags tap for convenience, certain parts can be welded with inclined plate in soil cabin, between cutting, first will
Inclined plate is cut off.In cutting, soil cabin panel is first cut, finally cuts shield shell.
This shield machine anterior shield disassembling method is being used, base bearing center ring can be avoided damage to, is not having to remove base bearing, subtract
Few anterior shield turns over number, and later stage restoration costs are greatly reduced, and can reach safety and steady shield machine disintegrates from tunnel
The purpose inside transported back.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (10)
1. a kind of disassembling method of shield machine anterior shield, which is characterized in that include the following steps:
After the completion of shield machine tunneling construction, the anterior shield of shield machine is unloaded;
In two cut-off rules are arranged on the anterior shield, two cut-off rules are set to the both sides of the center ring of the anterior shield;And
Along anterior shield described in two segmentation wire cuttings so that the anterior shield is cut into three parts, to complete shield machine
The disintegration of anterior shield.
2. the disassembling method of shield machine anterior shield as described in claim 1, which is characterized in that the periphery of the center ring of the anterior shield
It is connected with soil cabin panel between shield shell, opening is equipped at the top and bottom of the soil cabin panel;
When cut-off rule is arranged, the cut-off rule is set to the both sides of the soil cabin panel.
3. the disassembling method of shield machine anterior shield as described in claim 1, which is characterized in that when setting cut-off rule, avoid described
The ball valve and mounting hole being arranged on soil cabin panel.
4. the disassembling method of shield machine anterior shield as described in claim 1, which is characterized in that the periphery of the center ring of the anterior shield
Support is connected with multiple main gussets between shield shell, is supported by main ribs plate and connects the center ring and the shield shell;
Before anterior shield described in described two segmentations wire cuttings, in the outside of the center ring and described two cut-off rules it
Between setting one annular stiffener plate, the stiffener plate is fixedly connected with multiple main gussets.
5. the disassembling method of shield machine anterior shield as claimed in claim 4, which is characterized in that, will be described point when setting cut-off rule
The part that the center ring is corresponded on secant is arranged to arc shape lines, radian and the center ring of the arc shape lines
Radian is adapted.
6. the disassembling method of shield machine anterior shield as claimed in claim 5, which is characterized in that the arc shape lines are set to institute
State the edge of stiffener plate.
7. the disassembling method of shield machine anterior shield as described in claim 1, which is characterized in that when the cut-off rule is arranged, by institute
It states and corresponds to the part of shield shell on cut-off rule and be arranged perpendicular to the shield shell.
8. the disassembling method of shield machine anterior shield as described in claim 1, which is characterized in that cut along two cut-off rules
Further include before cutting the anterior shield:
In the both sides for corresponding to the cut-off rule on the outer surface of shield shell, positioning device is set.
9. the disassembling method of shield machine anterior shield as described in claim 1, which is characterized in that two cut-off rules are in described
The both sides of center flange are arranged in inverted image.
10. the disassembling method of shield machine anterior shield as described in claim 1, which is characterized in that cut band in the three parts of formation
There is the width of the part of the center ring to be less than the diameter that shield machine tunnels the tunnel to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379484.3A CN108691547A (en) | 2018-04-25 | 2018-04-25 | The disassembling method of shield machine anterior shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379484.3A CN108691547A (en) | 2018-04-25 | 2018-04-25 | The disassembling method of shield machine anterior shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108691547A true CN108691547A (en) | 2018-10-23 |
Family
ID=63845822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810379484.3A Pending CN108691547A (en) | 2018-04-25 | 2018-04-25 | The disassembling method of shield machine anterior shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108691547A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671121A (en) * | 2019-09-23 | 2020-01-10 | 中铁工程服务有限公司 | Disassembly structure, disassembly method and repair method of shield machine |
| CN111255469A (en) * | 2020-01-20 | 2020-06-09 | 中铁四局集团有限公司 | Modular disassembly construction method in closed narrow space of shield machine |
| CN114086972A (en) * | 2021-11-30 | 2022-02-25 | 中铁十四局集团隧道工程有限公司 | Construction method for disassembling shield body of shield tunneling machine in hole without expanding excavation and partitioning |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03132595A (en) * | 1989-10-17 | 1991-06-05 | Kawasaki Heavy Ind Ltd | Shield machine |
| JPH0932480A (en) * | 1995-07-14 | 1997-02-04 | Penta Ocean Constr Co Ltd | Cutter head for drilling concrete structure |
| CN1619102A (en) * | 2004-12-09 | 2005-05-25 | 上海隧道工程股份有限公司 | Cutter head for cutter head changeable entrydriving mechine |
| CN201666155U (en) * | 2010-08-04 | 2010-12-08 | 林辉 | Device for widening the adaptation of an EPB shield tunneling machine cutter-head for soft ground |
| CN103321647A (en) * | 2013-01-22 | 2013-09-25 | 上海振华重工(集团)股份有限公司 | Shield cutter head and manufacturing method thereof |
-
2018
- 2018-04-25 CN CN201810379484.3A patent/CN108691547A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03132595A (en) * | 1989-10-17 | 1991-06-05 | Kawasaki Heavy Ind Ltd | Shield machine |
| JPH0932480A (en) * | 1995-07-14 | 1997-02-04 | Penta Ocean Constr Co Ltd | Cutter head for drilling concrete structure |
| CN1619102A (en) * | 2004-12-09 | 2005-05-25 | 上海隧道工程股份有限公司 | Cutter head for cutter head changeable entrydriving mechine |
| CN201666155U (en) * | 2010-08-04 | 2010-12-08 | 林辉 | Device for widening the adaptation of an EPB shield tunneling machine cutter-head for soft ground |
| CN103321647A (en) * | 2013-01-22 | 2013-09-25 | 上海振华重工(集团)股份有限公司 | Shield cutter head and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李海等: "接收车站封闭条件下盾构拆机解体技术探析", 《隧道建设》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671121A (en) * | 2019-09-23 | 2020-01-10 | 中铁工程服务有限公司 | Disassembly structure, disassembly method and repair method of shield machine |
| CN111255469A (en) * | 2020-01-20 | 2020-06-09 | 中铁四局集团有限公司 | Modular disassembly construction method in closed narrow space of shield machine |
| CN111255469B (en) * | 2020-01-20 | 2021-09-17 | 中铁四局集团有限公司 | Modular disassembly construction method in closed narrow space of shield machine |
| CN114086972A (en) * | 2021-11-30 | 2022-02-25 | 中铁十四局集团隧道工程有限公司 | Construction method for disassembling shield body of shield tunneling machine in hole without expanding excavation and partitioning |
| CN114086972B (en) * | 2021-11-30 | 2024-01-30 | 中南大学 | Construction method for detaching shield body of shield machine without expanding excavation and blocking in hole |
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Application publication date: 20181023 |
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